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【简答题】
在烧杯①中：c(Fe 3+ )=0.20mol·dm -3 ，c(Fe 2+ )=0.10mol·dm -3 ；烧杯②中，c(Fe 3+ )=0.10mol·dm -3 ，c(Fe 2+ )=0.20mol·dm -3 ，用两个铂电极和一个盐桥接成原电池。求：
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举一反三
【单选题】Practice your communication skills when meeting with Americans by choosing the most appropriate answer in each situation. After exchanging business card, Americans will likely ___________ .
A.
ask you to explain the meaning of your name
B.
admire the quality of your business card
C.
look at your title to see if you are an important person in your company
D.
ask what you do
【简答题】枪膛内导转弹头的螺旋形凹凸结构中,凸出来的是()(填阴线或阳线)
【简答题】枪膛内导转弹头的螺旋形凹凸结构中,凹出来的是()(填阴线或阳线)
【单选题】When exchanging business cards in China, you should do all of the following except _______.
A.
include the name of your company, title, and credentials on your business card
B.
use both hands in the exchange as a sign of politeness
C.
quickly put the other person’s card in your pocket or purse to examine later
D.
be prepared to exchange business cards at both formal and informal gatherings
【简答题】修复失效零件主要具有哪些优点 ?
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